package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @author: 青肆
 * @date: 2022/8/20 11:27
 * @description:菜品管理
 */

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    //新增菜品

    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    //分页查询

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);

        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo, queryWrapper);

        //对象拷贝,除了records这个集合
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        //将records单独提出来
        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map(item -> {

            //建立一个新对象
            DishDto dishDto = new DishDto();

            //对象拷贝,将item中的records复制到新建的dishDto中
            BeanUtils.copyProperties(item, dishDto);

            //获取item的id
            Long categoryId = item.getCategoryId();

            //使用categoryService，根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {//判断category是否为空
                //获取name
                String categoryName = category.getName();

                //将name加入到dishDto中
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;

        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);

    }

    //根据id查询菜品信息和对应的口味信息
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    //修改菜品
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    //根据id修改菜品的状态status(停售和起售)
    //0停售，1起售。

    @PostMapping("/status/{status}")
    public R<String> updateMulStatus(@PathVariable Integer status, Long[] ids) {
        List<Long> list = Arrays.asList(ids);

        //构造条件构造器
        LambdaUpdateWrapper<Dish> updateWrapper = new LambdaUpdateWrapper<>();
        //添加过滤条件
        updateWrapper.set(Dish::getStatus, status).in(Dish::getId, list);
        dishService.update(updateWrapper);

        return R.success("菜品信息修改成功");
    }

    //根据id删除信息

    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids:{}", ids);

        dishService.removeWithFlavor(ids);
        return R.success("菜品信息删除成功");
    }

    //根据条件查询对应菜品名称

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());

        //添加条件，查询状态为1（售卖状态）的菜品
        queryWrapper.eq(Dish::getStatus, 1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            //复制文件
            BeanUtils.copyProperties(item, dishDto);

            //分类id
            Long categoryId = item.getCategoryId();

            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category == null) {
                //获得菜品名
                String categoryName = category.getName();
                //将菜品名赋于dishDto中
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();

            //条件构造器
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);

            //Sql:select * from dish_flavor where dish_id=?
            //口味的集合
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);

            //查询口味数据
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }
}
